Portable electric heater.



P. L. DYER. PORTABLE ELECTRIC HEATER.

APPLIUATION FILED MAY 25, 190 9.

Patented Sept 13,1910.

IZZW: A

UNITED STATES OFFICE.

FRANK L. DYEB, or moNcrcLAm, NEW JERSEY.

PORTABLE ELECTRIC HEATER.

ee e...

- Specification of Letters Tateiit. f P atented Sept. 13, 1910-Application fli May 25, 1909. s 'r iii} m l. 498,859.

To'a'Z-Z whom it army-concern:

Bait known that 1,; Fanatic- L. DYER, a

citizen of the United-States," and .a resident of Montc'lair, in thecounty of Essex and 'able's'ource of electric current when it is de-State of NeW'Jersey have made a certain 11 and useful Invention inPortable Electr c'Heaters, of which the "following is a dese i tion.

y invention relates to electric heaters,.

and my objeojt-isto rovide a simple, compact and eflicient device whichmay be'easily carried abou'tin ones pocket or With ones' belongings, andeasily connected to any suits'iie'd'to he'at Water or any desiredsubstance. Other objects of my invention-'1 reside in the constructionof; parts and: combinations o;f' elem en ts as" will be described inthe-following specification and" more particularly pointed out in-theappended-claims. 1- eferr-ingto the accompanying drawings, 1'" hick-theTsameVreferenee*characters' are" ugTifl 'tl-iroughoutto denotecorresponding parts,'-Figure lrepresents' a central vertical sectionthrough a form of my device, the ianip plug, connecting cord and heating'coil {bei-I'i shown in; elevation; Fig. 2-represents a si" e elevationof'the' sameg'Fig. 3 repre-- -s ents==ahorizontal section on line 3 3 ofF ig-.'- 1;-'Flg ..4: reptesents a cross section on 'lif e-4'' 1"o-i-Fi-g;- 2 looking downwardly in the dir ection of'the-arrow, andFig? 5repre seats-a Embdi-ficat-ion, partly in verticalsec-g tion-andpartly-inelevation:

Referring to the drawings, the heater 1 is io'rmed with a convoluted orfluted surface. 2 for the purpose of providing as extensive smear-radi tng surface as possible; EI-his heater 1-=is'-*" hollow 'and intheprocess 'of' 'n'iafiilfiaot'ure, tli6 O0I6"2""llaVlI1g the heating coilWrapped about the same is inserted thereinffThe-erids of the heatingcoil 3=extend -upwardly and are connected to the Whicliivr liotiiftjerfefe with the conduction .5

' a ree-e *9- t i y;

-ing posts-4 and 5. p

In assembling the device, thecoi l'3 mount ofthe heater .1. ET-hecoilfiisof such a. matGIlRIBHd SOLOQ IlStTHGtQ/d :as to have a high resistanceand "rapidly generate aconsider able amount of heat on. the passage .ofan electric current therethrough.

The" body 1 of the heater is preferably of metal and isa good-conductorof heat.

'The hollow tubular casing8 isv provided axially in line with the heater1 for containing' the electric connection 9 and the' plug v10 attachedto. theend thereof when the device is not in use. The-connection 9 is inthe form of a flexible cord, which ma be coiled up within the tubularcasing 8 w en not in use, and which may be extended therefrom to allowthe plug 10 to be inserted-within a 'convenientlamp socket or similarsource of current. The lower end of the cord ..9 is. at-

' may be provided with a. knurled edge, as

shown, for'convenience-in screwing or unserewingithe'same.

As shown, the heater body 1 and'casing- 8 are one integral structure,the heater 1, hows ever,. beinlg connected to. casing 8 at? severalseparated oints only, 'whereby theau gier surface of eater 1 isefiective'for the ra' -iation of heat as. well as the other surfaces ofsaid heater; As shown, the connection-be 1- tween -the heater and-the.hollow icasing :8

may'take'the form of two metal conduits :12 and 13-at diametricallyopposite points; the ends of the heating coil 3 extending through theseconduits in their ed on ocre zis first inserted'throughthe'up erend'of'casing 8 and the electric insulatngmaterial 7 inserted inposition betweenthe. same and the boreof the'heat'er-Q The 'e onduits.12and 13" may then be formed with the upper ends of the coil extendingupwardly thro'u h thesame. Inf-forming the blank for t e shell of. thedevice, the inetalmey be cut away to separate the heater drone thecasing-=8, metal being left, however, for the necks 17 and 18 asshown'at opposite points, with additional metal on passage to the hindsesss iswfth s e n? This Miditional metal may be cut loose toform flaps,

and the latter bent inwardlyand brazed or otherwise secured together atthe ends to.

' form the conduits .12 and 13, the inner sides and 18'.

of which are shown in the drawings as 17 Morev of the insulatingmaterial 7 is then placed above the coil 3 and the metal plate 14 placedin position above that and razed or otherwise secured in position toclose-the upper end of the heater 3 and furnish' the upperheat radiatingsurface, the

.. said plate 14 fitting around the conduits 12 end, in which the. plug10. maybe place and 13. These conduits 1-2 and 13 arethen filled withinsulating material around the conducting wire extending therethrou h,and the insulating late 6 carrying binding posts 4 and'5 to w ich theends of cord -9 are connected, lowered into position. The outer surfaceof tube 8 is provided-with an the plate dis adapted to rest. 1nassembling vinwardly directed shoulder 15 upon which the device .the pate 16 which is similar in shape to i.

ate 14 is thenv secured in position toclose e' lower end of tube 8,insulating material bei first secured in position to fill the connection9 extended-and the heater. I

placed in a vessel Of'WRtBI or any other substance which it is desired.to quickly heat. In the modificationshown in Figs. 5, the

hollow chamber 8 inwhi'chthe coil 9fhasbeen described as coiled isdispensed with,

thecoil in this'case being-wrapped for coni Yenience around the outsidethe device when not in use. As shown, the tube 8 is formedwith thehollow head 19 at its u per .convenienceswhen the .deyiceis out :ot use,

the fplu' being. illustrated as; inserted; into the hea with the endthereof which screws into a lamp socket directed T downwardly,

and: 'iven several turns in en agcment with that eaded bore of the hea19 to secure it firmly in place. The connections 3' from the heating.coil 3r1are brought up through ithe-bore of the-tube 8, ends areattached to the .closed lower ends .of short tubes orsockets 20,-preferably of .copper, the :upper ends of which-o en into :the .head-19. The space surroun and at their upper ing the wiresB', or conduitsin which they me be fsplaced, and the-copper sockets 20, is lled with,insulating:material.- The cable 9' carryingtherttvo necessary wireconnections is connected at one end to plug 10 and is wrapped around.the outside of tube 8, the cable ending in jacks :21, to each of whichone of the wires in the cable 9 is connected.

- havingl for When it is desired to use this apparatus, the plug 10 isunscrewedjrom its container 19 and screwed into a lamp socket, and thejacks 21 stuck into the sockets 20, thus completing the circuit for theheatm coil 3. In both forms of the heater, a 1 surfaces are preferablysmooth and (polished, so that they ma be readily cleane and the devicerendere sanitar when used broths, milk or t e like. It is obvious thatvarious changes may be made in my devicewithout departing from thespirit of the invention.

Having now described my invention, what I claim and desire to protect byLetters Patent is as follows:

"1. In a portable. heater, the combination of a heater a heating coilwithin said heater, a plug and connections between and joined to thesame and said coil, and a chamber for inclosing said plu and connectionswhen not in. use integ'ra with said heater, substantially as described.

2. In a portable heater, the combination of a casing, a plug in closedwithin and electric connections therefrom coiled within said casing andadapted to be extended therefrom, a heater secured to said casing a heatradiatin extended surface and a eating coil secure within said heaterand joined to said connections, substantially as described.

3. In a portable heater, the combination of a casing, electricconnections coiled within said casing and adapted to be extendedtherefrom, a heater secured to said casing at several separated pointsonly having. a curved heat radiatingextended surface almost entirelysurrounding the same, anda heating coil secured within said heater andjoined to said connections, substantially as described. v

.4. Ina portable heater, the.combination of a tubular casing, a plug andelectric connections inclosed within said casing and "adapted to beextended therefrom, .a heater axially in line with said casing andsecured thereto at several separated points only, and

having a curved heat radiating surface surrounding the same except atthe points of attachment, and, a heating coil-secured within sai'dheaterandqoined toisaid connections substantially as described.

-5. n .a ortable heater, the combination of a. close hollow, heater.body having a polished heat-radiating surface, coil within said body,

gained to said coil and extending, from said dy, and means forretaining; the conneca heating tion in com act-formwhemnm ii -use se-.

cured to sai body and axially in line therewith, substantially asdescribed. y

6. In a portable heater, the combination for heating 1 20 a flexibleconnection of a heater, a heating coil withinthe same, I

, said coil, and mee'ns for retaining said plug this 24 day of May 1909.

a. plug and connections t herefroin joined to This specification signedend witnessed and connections in compact .form when not in use,comprising an elongated body and an inclosure for said plug, secured toand Witnesses: axially in line with said heater, substan- DYER SMITH,tially as described. JOHN M. OANFIELD.

FRANK L. DYER.

